u/Ibsidoodle

Just taken over a small yard in GTA and can't quite decide what these plants are. They've clearly been chopped down in previous years but were left in the ground by the previous owners. I'm new to plant ID and can't decide between sumac, elder, tree of heaven or sorbaria. Any ideas?

If it's a native sumac I'll leave it, otherwise it's for the chop I think.

Edit: thanks for your advice everyone, I checked the little leaf feet and the smell - yup, smells like peanut butter. Guess I have a highly invasive Tree of Heaven on my hands. Three of them, in fact. Wish me luck